Tumor, Benign

Benign tumors are characterized by slow, circumscribed growth. Some of these benign tumors suddenly stop growing and form well-defined tumors surrounded by a connective tissue capsule. These include, for example, lipomas and fibromas. Others grow expansively and can displace normal tissue. However, tissue destruction usually does not take place. Benigne Tumours usually consist of well differentiated tissue with a regular cell structure. Typical cell division figures, such as the spindle apparatus, are very rare (for more details, see the cytology course). However, in contrast to malignant tumours, benign tumours do not metastasise. Eine The life-threatening effects of such tumours only arise when a natural passage, such as in the trachea, the ureters or in the gastrointestinal tract, is obstructed (narrowing and occlusion of hollow organs). These tumours can usually be surgically removed radically (i.e. in their entirety, with their roots) and are hardly prone to recurrence.